Penguins are birds. Penguins have adpated to live in water.
Baby penguins are called chicks.
It is believed that evolution due to the lack of land predators made penguins change their wings for flippers.
The Macaroni Penguin (Eudyptes chrysolophus) has a yellow-orange crest on its head. Is characterized by being one of the most territorial and aggressive species.
The Little Blue Penguin (Eudyptula minor) or Fairy Penguin is the smallest penguin with a weight about 2.6 lb. It is a mainly nocturnal species, and its behavior is slightly aggressive.